| ULTIMATE SIGNALS LIMITED | Private company limited by shares | Dissolved |
| WINNING SIGNALS LIMITED | Private company limited by shares | Dissolved |
| Signal.Sourcing Limited | Private company limited by shares | Live |
| SIGNAL-TECH LIMITED | Private company limited by shares | Dissolved |
| MCKIM SIGNALVISION GLOBAL CO., LIMITED | Private company limited by shares | Live |
| Signalytics Limited | Private company limited by shares | Live |
| SIGN-A-RAMA (CHINA) CO., LIMITED | Private company limited by shares | Dissolved |
| SIGNARE JEWELLERY LIMITED | Private company limited by shares | Live |
| SIGNART INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TMF Signatories Limited | Private company limited by shares | Live |
| EAS Signatory Limited | Private company limited by shares | Live |
| KEY SIGNATURE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SIGNATURE LIMITED | Private company limited by shares | Live |
| SIGNATURE COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| SIGNATURE I & D LIMITED | Private company limited by shares | Dissolved |
| LC SIGNATURE LIMITED | Private company limited by shares | Dissolved |
| WAN SIGNATURE COMPANY LIMITED | Private company limited by shares | Live |
| D18 SIGNATURE LIMITED | Private company limited by shares | Live |
| V.T SIGNATURE LIMITED | Private company limited by shares | Live |
| V Signature Limited | Private company limited by shares | Live |
| NEW SIGNATURE LIMITED | Private company limited by shares | Live |
| Signature IP Limited | | Live |
| Queens Signature Co., Limited | Private company limited by shares | Live |
| SignaturePrint International Limited | Private company limited by shares | Live |
| DEER GARDEN SIGNATURES LIMITED | Private company limited by shares | Live |
| Signature-Search (HK) Limited | Private company limited by shares | Dissolved |
| Signax Limited | Private company limited by shares | Live |
| Signboard Paradise Limited | Private company limited by shares | Live |
| SignCharge Limited | Private company limited by shares | Live |
| SIGNCHECK LIMITED | Private company limited by shares | Live |
| SIGNCO LIMITED | Private company limited by shares | Live |
| SIGNCOMPLEX LIMITED | Private company limited by shares | Dissolved |
| SIGNCOMPLEX LIMITED | Private company limited by shares | Live |
| Hong Kong Signda Trade Limited | Private company limited by shares | Live |
| SIGNDREAM INTERNATIONAL INTEGRATED MARKETING COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| SIGN-E LIMITED | Private company limited by shares | Dissolved |
| Non Signe Limited | Private company limited by shares | Live |
| Signed Capital Limited | Private company limited by shares | Live |
| Signeo Venture Limited | Private company limited by shares | Live |
| SIGNER LIMITED | Private company limited by shares | Live |
| GOLD SIGNER LIMITED | Private company limited by shares | Dissolved |
| SIGNES LIMITED | Private company limited by shares | Dissolved |
| SIGNET COMPANY LIMITED | Private company limited by shares | Live |
| SIGNEX LIMITED | Private company limited by shares | Dissolved |
| SIGNFAST ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SIGNFAST TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| HONGKONG SIGNFORD CO., LIMITED | Private company limited by shares | Live |
| SIGNFOREE LIMITED | Private company limited by shares | Live |
| SIGNICORE HK LIMITED | Private company limited by shares | Live |
| 3 Significant Limited | Private company limited by shares | Live |
| SIGNIFICANT SIGN LIMITED | Private company limited by shares | Live |
| South Significant Perspective Limited | Private company limited by shares | Live |
| Signifig Limited | Private company limited by shares | Live |
| Signify Limited | Private company limited by shares | Live |
| Signify Entertainment Asia Limited | Private company limited by shares | Live |
| Signin Limited | Private company limited by shares | Live |
| SIGNIN TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| Global Signing Co., Limited | Private company limited by shares | Live |
| SIGNING GOOD LAND & INVESTMENT LIMITED | Private company limited by shares | Live |
| SIGNITY HONG KONG LIMITED | Private company limited by shares | Live |
| SIGNIX LIMITED | Private company limited by shares | Live |
| SignLight Limited | Private company limited by shares | Live |
| HK LED SIGNLIGHT CO., LIMITED | Private company limited by shares | Dissolved |
| SIGNLINK LIMITED | Private company limited by shares | Live |
| SIGNLOGIC COMPANY LIMITED | Private company limited by shares | Live |
| SIGNODE HONG KONG LIMITED | Private company limited by shares | Live |
| SIGNODE INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| SIGNORI LIMITED | Private company limited by shares | Dissolved |
| LA SIGNORINA LIMITED | Private company limited by shares | Dissolved |
| SIGNPOST (HK) LIMITED | Private company limited by shares | Live |
| Signpost Corporation (Hong Kong) Limited | Private company limited by shares | Live |
| HK SIGNPOSTS JIAOZI SHOES (INTERNATIONAL) GROUP LIMITED | Private company limited by shares | Dissolved |
| AUBREY SIGNPRO CO., LIMITED | Private company limited by shares | Live |
| SIGNREAL INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| LED Signs Limited | Private company limited by shares | Live |
| ALL SIGNS LIMITED | Private company limited by shares | Live |
| TOP SIGNS LIMITED | Private company limited by shares | Dissolved |
| LANDEA SIGNS CO., LIMITED | Private company limited by shares | Live |
| EURO LED SIGNS LIMITED | Private company limited by shares | Dissolved |
| LUCK SIGNS LIMITED | Private company limited by shares | Live |
| SIGNSIRI LIMITED | Private company limited by shares | Live |
| SIGNSKY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SIGNSOUND LIMITED | Private company limited by shares | Live |
| SIGNSYS LIMITED | Private company limited by shares | Live |
| SIGNTAI LIMITED | Private company limited by shares | Live |
| SIGNTEC LIMITED | Private company limited by shares | Dissolved |
| AJ SIGNTECH LIMITED | Private company limited by shares | Dissolved |
| SIGNTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| SIGNTELECOM LIMITED | Private company limited by shares | Live |
| SIGNTEX (HK) LIMITED | Private company limited by shares | Dissolved |
| SIGNTIME INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SIGNTON LIMITED | Private company limited by shares | Dissolved |
| SIGNTRIP INVESTMENTS LIMITED | Private company limited by shares | Live |
| SIGNTRONICS LIMITED | Private company limited by shares | Live |
| SIGNUM CO. LIMITED | Private company limited by shares | Live |
| Signumqualitas Limited | Private company limited by shares | Live |
| SIGNUS (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| SIGNUS GROUP LIMITED | Private company limited by shares | Live |
| SIGNWAY LIMITED | Private company limited by shares | Dissolved |
| Signwell Company Limited | Private company limited by shares | Live |